What could potentially decrease the availability of security and also test the preparedness of data loss?

Ransomware could potentially decrease the availability of security and test the preparedness of data loss.

Explanation:

Ransomware is a type of software that is malicious to computers, smartphones and other devices. This type of malware will deny the owner, or user of device, access to their computer systems and/or data. The user will be unable to gain access to their software system unless they pay a certain amount of money.

This can be picked up on any device by clicking a phishing link or even going to a website that also infected unknowingly. When the system is affected with this type of malware, it can ruin a business and a normal everyday user since they can no longer access their system.